Multiple Level Menus

Flex Level Drop Down Menu FF1+ IE7+ Opr8+
Similar to Flex Level Pop Up Menu above, this flexible menu script lets you add a multi level drop down menu to any link on the page. It supports dropping down from the anchor link or to the right of it instead, which is useful when the link is a side bar link. A nice expanding animation brings the menu into view, with the delay before the menu appears/ disappears customizable. Cool!

Simple Tree Menu FF1+ IE5+ Opr7+
This is a unobtrusive Tree Menu script that turns any ordinary list (UL element) into a collapsible tree! Once transformed, the original list and its sublists can be collapsed/expanded at will, with cookies used to optionally persist its state.

jQuery TreeView Menu (v1.4) FF2+ IE6+ Opr9+
jQuery TreeView Menu brings together all the most practical features requested in a Tree Menu into one awesome menu script. The markup for the menu is simply a HTML list before the script transforms it into a fully functional TreeView Menu resembling the style of Window's File Explorer, among the many themes. Supports persistence, and optional asynchronous populating of the tree's contents via Ajax and JSON data returned from the server.

HV Menu FF1+ IE5+ Opr7+
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We named this script "HV menu" for its ability to be laid out both horizontally (as a top menu) and vertically (as a side menu), but it might as well be for its highly versatile nature. With support for miltiple sublevels, vertical and horizontal layout, NS6 compatibility, and more, HV menu is one of the best scripts in its field.

All Levels Navigational Menu FF1+ IE6+ Opr8+
All Levels Navigational Menu is a CSS/ HTML list based menu with support for infinite levels of sub menus. It's lightweight and  easy to implement (the menu contents are simply regular HTML lists), with all of the menu links search engine friendly.

Smooth Navigational Menu FF1+ IE7+ Opr8+
Smooth Navigation Menu is a multi level, CSS list based menu powered using jQuery that makes website navigation a smooth affair. The menu's contents can either be from direct markup on the page, or an external file and fetched via Ajax instead. A configurable, sleek "slide plus fade in" transition is applied during the unveiling of the sub menus. The menu supports both the horizontal and vertical (sidebar) orientation.

DD Mega Menu FF1+ IE6+ Opr8+
DD Mega Menu is a drop down menu system that supports arbitrary sub menu layouts, such as multiple columns of links, even arbitrary rich HTML. Furthermore, it supports nested mega menus, so one mega menu can contain links that in turn trigger another mega menu to drop down.

Drill Down Menu FF1+ IE6+ Opr8+
This script turns an ordinary UL list into a drill down style menu. The top level UL dictates the height of the menu, with the sub levels tucked away until navigated to. You can customize which level should be shown by default, whether to remember the last shown level when the page reloads, plus the speed of the "drilling" animation. Optional breadcrumb trails can be shown as well.

Top Navigational Bar III FF1+ IE5+ Opr7+
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An impressive three-level menu that functions in all DHTML browsers, including Mozilla and Opera 6+.

Blm Multi-level Effect menu FF1+ IE5+ Opr7+
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Blm Mult-level effect menu is a JavaScript/ CSS hybrid dropdown menu based on ordinary HTML lists. As its name suggests, it allows for infinite levels of sub menus.

Jim's DHTML Menu v5.7 FF1+ IE5+ Opr7+
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This script creates an absolutely positioned, cross browser navigational bar for your site. Efficient and small in file size, it can be set as either a horizontal or vertical menu, supporting multiple levels.

JsDOMenu FF1+ IE5+ Opr7+
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JsDOMenu is a context menu that pops up when the user "left" or "right" clicks on any blank space in the page. It supports unlimited submenus, and is functional in all modern browsers (IE5+, NS7+, Mozilla etc).

JsDOMenuBar FF1+ IE5+ Opr7+
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jsDOMenuBar is a cross browser horizontal menu bar based on jsDomenu above. It supports unlimited menu bar items, can be set to be draggable, and positioned either absolutely or relatively. jsDOMenuBar is 100% HTML/XHTML valid, and is fully customizable through CSS.

Chained Select menu FF1+ IE5+ Opr7+
A multi-dimensional form select menu, based on Xin's Chained Selects script. Links can be set to open in new window.